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63 Series
Home Deep Groove Ball Bearings 63 Series

6302 ZZ Versatile Deep Groove Ball Bearing For Electric Motors and Automation | 15×42×13 mm

6302 ZZ Versatile Deep Groove Ball Bearing For Electric Motors and Automation | 15×42×13 mm

The 6302 ZZ is a versatile, single-row deep groove ball bearing engineered for reliable performance in a broad spectrum of industrial and automation applications. Featuring dual Z-type metal shields, this bearing provides effective protection against dust and solid contaminants while maintaining low frictional torque. With a 15 mm bore and a 13 mm width, it is a popular choice for electric motors, pumps, and automotive components where balanced load capacity and contamination resistance are essential for extended service life.

6302 ZZ Deep Groove Ball Bearing 15x42x13 mm | ISO 63 Series – Medium | Double Shielded

This precision bearing utilizes a robust deep groove raceway geometry, enabling stable high-speed performance up to 19,000 r/min (Grease). The 6302 ZZ is engineered to accommodate moderate radial loads as well as axial loads in both directions, making it exceptionally suited for applications in electric motors, factory automation, and agricultural machinery where consistent, low-friction operation is required.

6302 ZZ Versatile Deep Groove Ball Bearing For Electric Motors and Automation | 15×42×13 mm

Comprehensive Applications

Ideal for a diverse range of industrial and light-to-medium duty mechanical systems:

Industrial & Factory Automation
  • Conveyor Rollers and Material Handling Equipment
  • Industrial Gearboxes and Speed Reducers
  • Pneumatic Actuators and Control Systems
  • Textile Machinery Spindles
General Engineering & Consumer Applications
  • Robotics and Small Automation Components
  • Agricultural Equipment Drivetrains
  • Office Equipment and Copiers
  • Medical Handpieces and Diagnostic Instruments 
Automotive & Light Machinery
  • Automotive Alternators and Starter Motors
  • Power Tool Armatures and Gearboxes
  • Engine Accessory Drives
  • Transmission Components
Electric Motors & Drive Systems
  • Small to Medium AC and DC Electric Motors
  • Cooling Fan Motors for IT and Telecom
  • Servo Motors and Encoder Systems
  • Pump and Compressor Drives

Key Performance Features

01. Optimized for High-Speed and Quiet Operation

Precision-manufactured components and a rigid pressed steel cage ensure consistent, quiet operation with minimal vibration. With limiting speeds up to 19,000 r/min, this bearing supports stable performance in sensitive devices like electric motors and precision instruments where low noise is critical.

02. Robust Design with Balanced Load Capacity

Conforming to the popular 63-series medium section, the 15×42×13 mm configuration delivers a dynamic load rating of 11.4 - 14.3 kN. This robust construction ensures reliable performance in applications where both radial and axial forces are present.

03. Effective Contaminant Exclusion

Double Z-type non-contact steel shields provide a reliable barrier against dust, dirt, and other airborne particulates from both sides. This design helps retain lubricant integrity and significantly extends the operational life of the bearing in harsh environments without introducing significant rotational drag.

Technical Specifications

Bearing Type Single Row Deep Groove Ball Bearing
ISO Dimension Series 63 Series – Medium
Basic Designation 6302
Suffix ZZ (Both sides with steel shields)
Bore Diameter (d) 15 mm
Outer Diameter (D) 42 mm
Width (B) 13 mm
Material (Races & Balls) Chrome Steel (GCr15 / SAE 52100)
Precision Class ABEC 1 / ISO P0 (Standard); ABEC 3 Available
Cage Material Pressed Steel
Dynamic Load Rating (Cʳ) 11.4 - 14.3 kN  
Static Load Rating (C₀ʳ) 5.45 kN
Limiting Speed (Grease) 17,000 - 19,000 r/min
Limiting Speed (Oil) ——
Weight (approx.) 0.082 - 0.083 kg

Interchange Part Numbers

Direct replacement for:

  • SKF: 6302-2Z / 6302-2Z/C3
  • NSK: 6302ZZ / 6302ZZCM 
  • FAG: 6302.2ZR / 6302-2Z
  • NTN: 6302ZZ 
  • KOYO: 6302ZZ 
  • NACHI: 6302ZZ 

Design & Configuration

The 6302 ZZ is furnished with double Z-type steel shields as standard, delivering enhanced internal protection in dusty or debris-prone industrial conditions. For applications requiring a hermetic seal against moisture or finer contaminants, the double rubber-sealed variant (6302 2RS) is also available. For applications involving higher operating temperatures or shaft expansion, a C3 internal clearance variant (6302 ZZ C3) can be supplied.

"The 6302 ZZ is a versatile workhorse for electric motors and industrial drives, combining reliable load capacity with effective contamination protection for long-term, maintenance-free operation."

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Request a Quote for Ball Bearings

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